shot down the theory of closing loopholes to cut the deficit saying it's exactly that. a theory. >> it is not possible for us to raise the amount of revenue that's required for a balanced package if all you're relying on is closing deductions and loopholes. it is possible to do theoretically. it is not possible or wise to do as a practical matter. >> the president then threw a left hook warning republicans who think they might be aim able to use the debt ceiling as leverage in future negotiations and saying essentially dream on. >> if congress in any way suggests that they're going to tie negotiations to debt ceiling votes and take us to the brink of default once again, as part of a budget negotiation, which by the way we have never done in our history until we did it last year, i will not play that game. because we've got to break that habit before it starts. >> joining me now from the capitol dome, nbc's luke russert. i don't know, i think that was what we call officially laying the smack down over there at the business roundtable. i was really surprised that the pres